The Impact of Major Earthquakes on Students' Emotional Distress and Internalizing Symptoms, Externalizing Behaviors, and Coping During the Implementation of keepin' it REAL-Mexico.

This article reports on effects of two earthquakes in Mexico on adolescents attending middle school. The earthquakes struck in close succession during the implementation of a school-based prevention program, providing an opportunity to assess emotional distress due to the earthquakes and whether the life skills taught in the program affected how students coped with the natural disaster. The objectives were to (1) evaluate the earthquakes' impact on students' distress; (2) assess if distress is associated with internalizing symptomology and externalizing behaviors; and (3) investigate if students receiving the original and adapted versions of the intervention coped better with the events. A Mexico-US research team culturally adapted keepin' it REAL to address connections between substance use among early adolescents in Mexico and exposure to violence. A random sample of public middle schools from three cities (Mexico City, Guadalajara, and Monterrey), stratified by whether they held morning or afternoon sessions, was selected. A total of 5522 7th grade students from 36 schools participated in the study. Students answered pretest and posttest questionnaires; the latter assessed earthquake-related distress and coping strategies. Earthquake-related distress was associated with all measures of undesired internalizing symptomology and externalizing behaviors. Compared to controls, students in the adapted intervention reported less aggressive and rule-breaking externalizing behavior and less violence perpetration. However, these intervention effects were not moderated by the level of earthquake-related distress, and they were not mediated by positive or negative coping. The findings have implications for prevention intervention research and policy as natural and human-made disasters occur more often.

Parenting in 2 Worlds: Testing improved parent-adolescent communication about sexuality in Urban American Indian families.

Urban American Indian (AI) adolescents are more likely than non-Natives to have early sexual debut, teen pregnancies, sexually transmitted infections, and inadequate sexual health information. A RCT in three Arizona cities, with 585 parents of urban AI adolescents, tested whether a culturally tailored parenting intervention for urban AI families, Parenting in 2 Worlds (P2W), increased parent-adolescent communication about sexuality, compared to an informational family health intervention that was not culturally tailored. P2W produced significantly larger increases on two measures: communication about general sexual health and about sexual decision-making. The desired effects of P2W on the first measure were stronger short-term for cross-gender dyads, while for the second measure, they were stronger long-term for both mothers and fathers of adolescent sons.

Keepin' It REAL-Mantente REAL in Mexico: Longitudinal Examination of Youth Drug Resistance Strategies and Substance Use Among Early Adolescents.

PURPOSE: This study examined if culturally and linguistically adapted versions of a US-developed adolescent substance use prevention intervention, keepin' it REAL (kiREAL), for Mexico increases the use of drug resistance strategies and if increased use of resistance strategies subsequently leads to a reduction in the frequency of substance use (i.e., alcohol, cigarette, marijuana, and inhalants). METHODS: Students (N = 5,522, 49% female, age range = 11-17) in 36 middle schools across three cities in Mexico were randomized into three conditions: (1) Mantente REAL (MREAL), the culturally adapted version, (2) kiREAL-S, the linguistically adapted version, and (3) Control. Using survey data collected at four time points, random intercept cross-lagged path analyses tested the direct and indirect effects of MREAL and kiREAL-S compared to Control. RESULTS: At time 2, the number of drug resistance strategies used by students increased in both MREAL (ß = 0.103, p = .001) and kiREAL-S (ß = 0.064, p = .002) compared to Control. However, only MREAL lead to less frequent use of alcohol (ß = -0.001, p = .038), cigarettes (ß = -0.001, p = .019), marijuana (ß = -0.002, p = .030), and inhalants (ß = -0.001, p = .021) at time 4, mediated through increased use of drug resistance strategies. DISCUSSION: This study provides evidence that MREAL and kiREAL-S are successful in spurring use of the drug resistance strategies that are the core component of the intervention. Only MREAL achieved long-term effects on substance use behaviors, the ultimate objective of these interventions. These findings provide support for the value and importance of rigorous cultural adaptation of efficacious prevention programs as a necessary condition for enhancing prevention benefits for participating youth.

Exposure to neighborhood poverty from adolescence through emerging adulthood and sleep duration in US adults.

Does exposure to neighborhood poverty from adolescence to early adulthood have differential influence on sleep duration across racial/ethnic groups? We used data from the National Longitudinal Study of Adolescent to Adult Health that consisted of 6756 Non-Hispanic (NH) White respondents, 2471 NH Black respondents, and 2000 Hispanic respondents and multinomial logistic models to predict respondent reported sleep duration based on exposure to neighborhood poverty during adolescence and adulthood. Results indicated that neighborhood poverty exposure was related to short sleep duration among NH White respondents only. We discuss these results in relation to coping, resilience, and White psychology.

A Pilot Study of an Evidence-Based Prevention Intervention (keepin' it REAL) for Early Adolescents in Kenyan Schools.

CONCLUSIONS: Although larger trials with a more representative sample of schools are needed, the study suggests the potential for kiR as an effective approach for substance use prevention in Kenya. METHOD: A convenience sample of primary schools in metropolitan Nairobi was randomized into an intervention or control group. Teachers in intervention schools were trained to deliver the kiR curriculum with fidelity. Students in seventh and eighth grades in the intervention and control schools (N = 533) completed pretest and posttest questionnaires assessing substance use behaviors, attitudes, and drug resistance strategies. OBJECTIVE: Although many primary school students in Kenya report use of alcohol and other drugs, evidence-based prevention interventions for schools are generally unavailable. Globally, there are growing opportunities to conduct research that assesses whether efficacious interventions from elsewhere can be adopted for new settings and populations. This small pilot study implemented and evaluated a linguistically adapted version of the school-based keepin' it REAL (kiR) universal substance use prevention program from the United States in Kenyan primary schools to assess its effectiveness and estimate potential effect sizes. RESULTS: Relative to the control group, kiR students reported several desired changes in behaviors and attitudes: less recent alcohol use and heavy (binge) alcohol drinking, and continuing or increased adherence to certain anti-drug norms. There was partial evidence that kiR helped students rely less on conflictual drug resistance strategies, such as reacting to substance offers angrily or with violence. Effect sizes for these outcomes compare favorably to those obtained in other school-based prevention interventions.

Urban Violence, Migration and Alcohol, Tobacco, and Marijuana Use among Transnational Students in Northern Mexico.

This article reports on the findings of a study of the relationship between transnational experiences in the United States (US) and the use of alcohol, tobacco, and marijuana among 7th grade students (n = 1418). The study was guided by a cross-national framework for research on immigrant health and assessed the accumulation of risk factors for transnational adolescents. Data came from a survey conducted in 2017 in Nogales, Mexico. In this study, the last 30-day prevalence of use of alcohol, tobacco, and marijuana among students was 21.7%, 8.3%, and 2.4%, respectively. Most students were born in Nogales (69.6%), while 10.5% were born in the US, 7.5% attended school in the US, and 3.6% engaged in health-related risk behaviors while living in or visiting the US. Students with transnational experiences, such as attending school in the US, reported the highest 30-day prevalence of tobacco (13.3%) and marijuana (9.5%) use. After adjusting for family, school, access to substances and neighborhood violence variables, students who engaged in health-related risk behavior in the US had significantly increased odds of alcohol and marijuana use while later attending school in Mexico. The article discusses the findings from a prevention science perspective and provides implications for policy, practice, and future research on the Mexico-US border region.

Use of Violence as a Strategy of Early Adolescents for Rejecting Drug Offers in Mexican Cities.

Drug use and violence are two interconnected problems in violent urban contexts, leading to coercive drug offers. In this study, relationships between drug use, use of violence as a strategy for rejecting drug offers, and exposure to neighborhood violence were analyzed in Mexican students. Data were obtained through a self-report survey and focus groups with lower secondary students in three Mexican metropolitan areas. Both quantitative and qualitative results indicated that students who had used or would use violence as a strategy for rejecting drug offers presented a more problematic psychosocial profile, with exposure to neighborhood violence as the main predictor. These results suggest that Mexican students in violent cities may resort to violence as a strategy for rejecting drug offers.

El consumo de drogas y la violencia son dos problemas interconectados en contextos urbanos violentos y generan ofrecimientos de drogas coercitivos. En este estudio se analizaron las relaciones entre el consumo de drogas, el uso de violencia como una estrategia para resistir ofrecimientos de drogas y la exposición a violencia en el barrio entre estudiantes mexicanos. Se obtuvieron los datos mediante una encuesta de autoinforme y grupos de discusión centrada con estudiantes de educación secundaria en tres áreas metropolitanas de México. Tanto los resultados cuantitativos como los cualitativos indicaron que aquellos estudiantes que habían usado o usarían violencia como una estrategia para resistir ofrecimientos de drogas presentaban un perfil psicosocial más problemático, con la exposición a violencia en el barrio como el principal predictor. Estos resultados sugieren que los estudiantes mexicanos en ciudades violentas pueden recurrir a la violencia como una estrategia para resistir ofrecimientos de drogas.

The Feasibility, Acceptability, and Utility of Mantente REAL: the Culturally Adapted Version of keepin' it REAL for Mexico.

A binational team of investigators culturally adapted, implemented, and tested the efficacy in Mexico of keepin' it REAL, a US-designed prevention intervention for youth. This article reports on the social validity of the adapted intervention by assessing its feasibility, acceptability, and utility, as perceived by participating middle school students, teachers/implementers, and school administrators. Middle schools (N = 36) were randomly assigned to (1) the culturally adapted version for Mexico (Mantente REAL), (2) the original intervention from the USA (keepin' it REAL) translated into Spanish, or (3) a control condition (treatment as usual). Adult and child feedback about the adapted and original versions of the intervention indicate that both are feasible to implement in the Mexican context. Implementation fidelity was equally high for both versions of the manualized intervention. Students, however, were more satisfied with the culturally adapted version than with the non-adapted version. They reported gaining more knowledge, finding it more acceptable, applicable, and authentic, and they reported discussing the program with their family and friends more often. The findings support the feasibility of engaging classroom teachers to implement manualized prevention programs in Mexico. These findings also advance prevention science by documenting the importance of cultural adaptation as a means to increase students' identification with and acceptability of efficacious school-based interventions. The article discusses the practice, policy, and future prevention research implications of the findings for Mexico and their potential generalizability to other middle- and lower-income countries.

Longitudinal Associations between Parental Support and Parental Knowledge on Behavioral and Emotional Problems in Adolescents.

When testing longitudinal effects of parenting practices on adolescent adjustment, an integrated consideration of externalizing and internalizing behaviors is a gap in research. This study analyzed how parental support and parental knowledge directly and indirectly influence both antisocial behavior and emotional problems. The sample had 642 adolescents aged 12-15 (mean age = 12.49; 45.4% females) from Spain, who participated in a three-year long study. The results showed longitudinal bidirectional associations between parental support and parental knowledge. Only parental knowledge, however, directly predicted antisocial behavior and emotional problems. Parental support had an indirect effect on outcomes through the mediating effect of parental knowledge. This study has practical implications by indicating that increasing parental knowledge should be the target of educational-prevention programs.

Perception of Parental Knowledge by Parents and Adolescents: Unique Effects on Recent Substance Use in a Latinx Sample.

The main objective of the current study is to analyze how the unique perspectives from both parents and children in regards to parental knowledge of the child's whereabouts, activities, and friendships are related to the adolescent's recent substance use four months later. Differences between parents and children, as well as between male and female adolescents are examined. Data come from a Latinx sample (mostly Mexican-origin) of 523 parent-adolescent dyads from Arizona (US) using a multi-informant approach (parent and adolescent reports). The results indicate that parents, especially mothers, report higher levels of parental knowledge than adolescents do. The structural equation modeling (SEM) results for the total sample indicate that both parents' and adolescents' unique perception of the level of parental knowledge is negatively related to the adolescents' recent alcohol and cannabis use four months later. Further, multi-group SEM results split by gender indicate that parents' unique perception of higher levels of parental knowledge is only marginally related to lower alcohol use for both males and females, whereas adolescents' unique perception is negatively related to alcohol and cannabis use (significantly) and tobacco use (marginally) for both males and females. No significant gender differences were found in the effects of parental knowledge on substance use. Findings suggest that parents' and adolescents' perceptions seem to be quite distinctive and independent from each other. Implications of these results regarding intervention programs for preventing substance use are discussed.

El objetivo principal de este estudio es analizar cómo las perspectivas únicas de padres e hijos con respecto al conocimiento de los padres sobre el paradero, las actividades y las amistades de su hijo/a se relacionan con el consumo reciente de sustancias del adolescente cuatro meses después. Se examinan las diferencias entre padres e hijos, así como entre adolescentes chicas y chicos. Los datos provienen de una muestra de latinos (en su mayoría de origen mexicano) de 523 díadas de padres y adolescentes de Arizona (EE.UU.) utilizando un enfoque de múltiples informantes (informes de padres y adolescentes). Los resultados indican que los padres, especialmente las madres, reportan niveles más altos de conocimiento parental que los adolescentes. Los resultados del modelo de ecuaciones estructurales (SEM) para la muestra total indican que tanto la percepción única de los padres como la de los adolescentes del nivel de conocimiento parental está relacionada de forma negativa con el consumo reciente de alcohol y cannabis por parte de los adolescentes cuatro meses después. Además, los resultados de SEM multigrupo divididos por género indican que la percepción única de los padres de niveles más altos de conocimiento parental está únicamente relacionada de forma marginal con un menor consumo de alcohol, tanto para chicos como para chicas, mientras que la percepción única de los adolescentes está relacionada de forma negativa con el consumo de alcohol y cannabis (significativamente) y el consumo de tabaco (marginalmente), tanto en chicos como en chicas. No se encontraron diferencias de género significativas en los efectos del conocimiento parental sobre el uso de sustancias. Los resultados sugieren que las percepciones de padres y adolescentes parecen ser bastante distintas e independientes entre sí. Se discuten las implicaciones de estos resultados con respecto a los programas de intervención para prevenir el consumo de sustancias.

Keepin' It REAL-Mantente REAL in Mexico: a Cluster Randomized Controlled Trial of a Culturally Adapted Substance Use Prevention Curriculum for Early Adolescents.

This study assesses the efficacy of a version of the keepin' it REAL (kiREAL) substance use prevention curriculum for middle school students that was culturally adapted for Mexico, renamed Mantente REAL (MREAL), and tested in a cluster randomized controlled trial in Mexico's three largest cities. Student participants were in 7th grade in public middle schools (N = 5523, 49% female, mean age = 11.9). A representative sample of 12 schools from each city, stratified by whether they held morning or afternoon sessions, was randomized to three conditions: culturally adapted MREAL, original kiREAL translated into Spanish, or a treatment-as-usual control group. Regular classroom teachers were trained to deliver the adapted MREAL or the kiREAL manualized curricula. Students with active parental consent completed pretest and post-test questionnaires, 7-8 months apart, at the beginning and end of the 2017-2018 academic year. We assessed the MREAL intervention, relative to kiREAL and controls, with general linear models adjusted for baseline, attrition (24%), non-normal distributions, stratification by city, and school-level clustering. Among students already using the substance more often at pretest, MREAL students had relatively more desirable outcomes, compared to kiREAL and/or to controls, in recent use of alcohol, cigarettes, "hard drugs," heavy episodic drinking, and intoxication. MREAL students reported relatively less violence victimization and perpetration of bullying and relatively more use of three of the intervention's REAL drug resistance strategies (Explain, Avoid, Leave). The adapted version of kiREAL for Mexico showed numerous desired outcomes in areas deliberately targeted in the cultural adaptation. Full protocol can be accessed through Clinical Trials.gov. ID: NCT03233386, "'Keepin' It REAL in Mexico: An adaptation and multisite RCT".

Variations in risk and promotive factors on substance use among urban American Indian youth.

Although roughly 70% of the American Indian and Alaska Native (AI) population live in urban areas, research is scarce regarding this population. As a consequence, there is limited understanding about the salient socioenvironmental factors that aid in preventing substance use among urban AI communities. This study utilized a statewide, cross-sectional, school-based survey of urban AI adolescents (N = 2,375) to (a) examine the associations between substance use and risk and promotive factors within the family and peer group, and (b) explore how these associations vary by subgroups (gender, racial/ethnic background, and grade level). Results suggest that risk factors-familial substance use and antisocial peer affiliation-were associated with higher alcohol, cigarette, and marijuana use. However, these findings varied by subgroup. For males, involvement with antisocial peers was associated with greater marijuana use. Involvement with antisocial peers was also positively associated with alcohol and marijuana use for multiracial/multiethnic AI adolescents and those adolescents in 10th and 12th grades. The promotive factors-supportive family environment and prosocial peer affiliation-were not universally associated with lowered substance use by subgroup. This study advances understandings of the risk and promotive factors important in reducing and preventing substance use among urban AI adolescents. Experiencing familial substance use and affiliating with antisocial peers were the salient factors associated with increased substance use, particularly for urban AI adolescents who are older, male, and with multiracial/multiethnic AI backgrounds.

Testing a Culturally Adapted Youth Substance Use Prevention Program in a Mexican Border City: Mantente REAL.

Background: This article reports on a test of a youth substance use prevention program conducted in Nogales-Sonora, a Mexican city on the US border. Objective: The study tested the efficacy of a version of the keepin' it REAL curriculum for middle school students that was culturally adapted for Mexico and renamed Mantente REAL. Methods: Students in 7th grade classrooms in four public schools participated in the study (N = 1,418, 49% female, mean age = 11.9). Using a clustered randomized design, two schools received the intervention and two served as a treatment-as-usual control group. Regular classroom teachers were trained to deliver the twelve-lesson Mantente REAL manualized curriculum. Parents provided active consent and students gave written assent to collect pretest and posttest questionnaire data, 7 months apart, at the beginning and end of the 2017-2018 academic year. We assessed the Mantente REAL intervention with general linear models adjusted for baseline, attrition, non-linear distributions, and school-level clustering. Results: Students who participated in Mantente REAL reported relatively less frequent use of alcohol and illicit drugs other than marijuana, compared to students in control schools. Males alone reported desirable intervention effects for marijuana use. These desirable effects were especially strong among students who reported higher initial levels of involvement in risky behaviors. Among students more at risk, both females and males receiving the program reported relative reductions in the frequency of use of alcohol and illicit drugs. Conclusions: These promising results within the Mexico-US border context support a further dissemination of the intervention and additional youth prevention research in the region.

Applicability of the Theory of Planned Behavior for Predicting Alcohol Use in Spanish Early Adolescents.

According to the theory of planned behavior (TPB), intentions to perform a specific behavior are the result of attitudes, norms, and perceived control, and in turn, intentions and perceived control are the main predictors of the behavior. This study aimed to test the applicability of TPB in predicting alcohol use in normative pre-adolescents. The sample was composed of 755 Spanish adolescents aged 11 to 15 (M = 12.24; SD = 0.56), 47.1% females, from 12 state secondary schools in Spain. The results of path analysis indicate that positive attitudes towards alcohol, favorable norms towards alcohol, and offer vulnerability (perceived control) are significantly positively related to intentions to use alcohol as well as negatively related to actual behavioral control (i.e., actual strategies to avoid alcohol use). In turn, intentions to use and actual control predict higher alcohol frequency and heavy drinking. Significant indirect effects of these antecedents were found on alcohol outcomes through the mediation of intentions and actual control. The findings suggest that the validity and applicability of the TPB in normative pre-adolescents depend on the severity of alcohol use and point to a need to consider negative social influence in decision making processes in early adolescence.

Parenting in 2 worlds: Effects of a culturally grounded parenting intervention for urban American Indians on participant cultural engagement.

BACKGROUND: Culturally appropriate, evidence-based prevention programs are seldom available to the growing majority of American Indians (AIs) who now live in cities. Parenting in 2 Worlds (P2W), a culturally grounded parenting intervention, was created to strengthen family functioning and reduce behavioral health risks in urban AI families from diverse tribal backgrounds. OBJECTIVES: This study reports on the AI cultural engagement of the P2W participants as an outcome of the intervention. METHOD: Data came from 575 parents of AI children (ages 10-17) in a randomized controlled trial in three Arizona cities. Parents were recruited through urban Indian centers and randomized to P2W or to an informational family health curriculum, Healthy Families in 2 Worlds (HF2W). Both P2W and HF2W consisted of 10 workshops delivered weekly by AI community facilitators. Pretests and posttests measured identification and engagement with traditional AI heritage, culture and practices. Tests of the efficacy of P2W versus HF2W used baseline adjusted regression models using FIML estimation to adjust for attrition, including random effects (site, facilitator), and controlling dosage. Moderated treatment effects by pretest levels of cultural engagement were tested with mean centered interactions. RESULTS: Compared to parents in HF2W, those in P2W reported significantly larger increases in AI ethnic identity, AI spirituality, and positive mainstream cultural identification. Increases in cultural engagement were significantly larger for P2W participants who were relatively less culturally engaged at pretest. CONCLUSIONS: Culturally adapted parenting interventions like P2W that effectively build on AI cultural heritage can also promote greater AI cultural identification and involvement. (PsycInfo Database Record (c) 2020 APA, all rights reserved).

Reciprocal Effects of Alcohol Use and Violence Perpetration Among Early Adolescents in Mexico: A Gendered Analysis.

Although substance use and violent behaviors often emerge together in adolescence, and both have similar widely cited causes and negative consequences for development, it remains unclear whether and how they may be linked causally. This study of early adolescents in Mexico's three largest cities tested whether alcohol use and violence perpetration are temporally related, whether their relationship is unidirectional or reciprocal, and whether the relationship differs by gender and the type of violence. The study employed longitudinal data from seventh grade students (N = 4830; M age = 12.0, range 11-15; 49% female) in 18 public middle schools in Mexico City, Guadalajara and Monterrey. Students completed questionnaires at the beginning, middle, and end of the 2014-2015 academic year. Students' responses to a multi-dimensional violence assessment emerged in two distinct patterns: criminally violent acts, and bullying/aggression. Although males engaged in both types of violence more frequently than females at all three time points, they used alcohol more frequently than females only at the first survey, after which the gender gap disappeared. Cross-lagged multi-group path models showed that, for both males and females, more frequent alcohol use predicted subsequent increases in criminally violent behavior, and bullying/aggression predicted later increases in alcohol use. Reciprocal associations varied by gender and type of violence: Alcohol use was reciprocally linked to criminally violent behavior among males only, and reciprocally linked to bullying-aggression among females alone. The results are interpreted in the context of sharply increasing rates of violence in Mexico and changing gender norms, with implications for youth prevention programs.

An Efficacy Trial of the Ho'ouna Pono Drug Prevention Curriculum: An Evaluation of a Culturally Grounded Substance Abuse Prevention Program in Rural Hawai'i.

This study reports on the drug use outcomes in an efficacy trial of a culturally grounded, school-based, substance abuse prevention curriculum in rural Hawai'i. The curriculum (Ho'ouna Pono) was developed through a series of pre-prevention and pilot/feasibility studies funded by the National Institute on Drug Abuse, and focuses on culturally relevant drug resistance skills training. The present study used a dynamic wait-listed control group design (Brown, Wyman, Guo, & Pena, 2006), in which cohorts of middle/intermediate public schools on Hawai'i Island were exposed to the curriculum at different time periods over a two-year time frame. Four-hundred and eighty six youth participated in the study. Approximately 90% of these youth were 11 or 12 years of age at the start of the trial. Growth curve modeling over six waves of data was conducted for alcohol, marijuana, cigarettes/e-cigarettes, crystal methamphetamine, and other hard drugs. The findings for alcohol use were contrary to the hypothesized effects of the intervention, but may have been a reflection of a lack equivalence among the cohorts in risk factors that were unaccounted for in the study. Despite this issue, the findings also indicated small, statistically significant changes in the intended direction for cigarette/e-cigarette and hard drug use. The present study compliments prior pilot research on the curriculum, and has implications for addressing Native Hawaiian and Pacific Islander health disparities.

Testing the keepin' it REAL Substance Use Prevention Curriculum Among Early Adolescents in Guatemala City.

This article describes a test in Guatemala City of Mantente REAL, a linguistically adapted version of the keepin' it REAL universal substance use prevention curriculum for early adolescents that teaches culturally grounded drug resistance, risk assessment, and decision making skills. Academic researchers collaborated with a local non-profit to recruit and randomize 12 elementary schools in Guatemala City to intervention and comparison conditions. Regular classroom teachers were trained to deliver the ten-lesson Mantente REAL (MR) manualized curriculum to sixth-grade students. Parents provided passive consent and students gave active assent for data collection, which occurred between February 2013 and September 2014. Two academic year cohorts of students participated (n = 676; 53% male; M age = 12.2). All students completed a pretest questionnaire before the curriculum lessons began in intervention schools and a posttest (87% matched) 4 months later, 1 month after the final lesson. We assessed the MR intervention with paired t tests, effect sizes (Cohen's d), and general linear models adjusted for baseline, attrition, non-linear distributions, and school-level clustering. Results indicated that MR can be an effective school-based prevention approach in Guatemala. The MR participants reported pretest-to-posttest changes in desirable directions on substance use behaviors, attitudinal antecedents of substance use, and acquisition of drug resistance skills. The comparison group generally changed in undesirable directions. In linear models, the MR participants, relative to the comparison group, reported less cigarette and marijuana use, less positive drug use expectancies, and greater use of drug resistance skills. Intervention effect sizes were between .2 and .3.

Traditional gender roles and substance-use behaviors, attitudes, exposure, and resistance among early adolescents in large cities of Mexico.

This study investigated the associations between traditional gender roles (TGRs) and substance use among early adolescents in Mexico's largest cities. The sample of seventh grade students (n = 4,932) attended 26 public schools in Mexico City, Guadalajara, or Monterrey in 2014. Outcomes included recent alcohol, binge drinking, cigarette and marijuana use, and lifetime poly-substance use; substance-use intentions, norms, attitudes, and expectancies; and substance-use exposure (peer use, offers) and resistance (refusal confidence, refusal skills, and decision-making skills). A TGR scale assessed endorsement of a polarized gender division of family labor and power. As hypothesized, among males, TGRs were consistently associated with poorer outcomes, and this association was usually stronger for males than for females. In contrast, among females there was no evidence that TGRs were associated with desirable outcomes. Contrary to expectations, TGRs predicted poorer outcomes for both females and males, and to equivalent degrees, for binge drinking, cigarette use, positive substance-use expectancies, and friends' approval of substance use, and they predicted poorer outcomes for females but not for males on parental disapproval of substance use and drug-resistance skills. Interpretations highlight the persisting aspects of TGRs in the family and conflicting messages for females as Mexico undergoes changes in its gender order.

Substance Use Prevention for Urban American Indian Youth: A Efficacy Trial of the Culturally Adapted Living in 2 Worlds Program.

This article describes a small efficacy trial of the Living in 2 Worlds (L2W) substance use prevention curriculum, a culturally adapted version of keepin' it REAL (kiR) redesigned for urban American Indian (AI) middle school students. Focused on strengthening resiliency and AI cultural engagement, L2W teaches drug resistance skills, decision making, and culturally grounded prevention messages. Using cluster random assignment, the research team randomized three urban middle schools with enrichment classes for AI students. AI teachers of these classes delivered the L2W curriculum in two schools; the remaining school implemented kiR, unadapted, and became the comparison group. AI students (N = 107) completed a pretest questionnaire before they received the manualized curriculum lessons, and a posttest (85% completion) 1 month after the final lesson. We assessed the adapted L2W intervention, compared to kiR, with paired t tests, baseline adjusted general linear models, and effect size estimates (Cohen's d). Differences between the L2W and kiR groups reached statistically significant thresholds for four outcomes. Youth receiving L2W, compared to kiR, reported less growth in cigarette use from pretest to posttest, less frequent use of the Leave drug resistance strategy, and less loss of connections to AI spirituality and cultural traditions. For other substance use behaviors and antecedents, the direction of the non-significant effects in small sample tests was toward more positive outcomes in L2W and small to medium effect sizes. Results suggest that evidence-based substance use prevention programs that are culturally adapted for urban AI adolescents, like L2W, can be a foundation for prevention approaches to help delay initiation and slow increases in substance use. In addition to study limitations, we discuss implementation challenges in delivering school-based interventions for urban AI populations.